Electric switch.



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G. H. HART.

ELECTRIC SWITCH.

APPLICATION FILED AUC-L3 I9I5.

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Specification o insonni,

Application led August 3, 1915. Serial No. 43,357.

Be it known that I, GEORGE H. HART, a citizen of the United States, residing at West Hartford, county of Hartford, State 7 of Connecticut, have invented a certain new and useful improvement in Electric Switches, of which the following is a full, clear, and exact description.

y improvement relates `to electric switches and has for its object to vuse a simple and' compact oscillating electric switch in which the switch arm member is provided with a chamber containing a spring-pressed ball engaging a peaked cam upon an oscillating actuating member.

The following is a description' of an embodiment of my invention, reference being had to the accompanying drawings, in Which,

Figure 1 is a side elevation of a switch v embodying my invention; Fig. 2 is a section of the same on the line 2-2, Fig. 1; and, Figs. 3 and 4 aredetails showing the switch arm in its two positions.

Referring more particularly to the drawings, 1 is the base of the switch having mounted thereon the pivot' 2, on which is mounted the actuating member 3 'carrying a cam 4 "having a high point 5. The cam is arranged so as to be symmetrically disposed relatively to said pivot, the pivot being in the central portion of the actuating member. To the actuating member are pivotally connected push buttons 6-46.

7 is the switch arm journaled at its upan elongated chamber containing the ball 8 engaged by the spring 9. The axis of said chamber is in line with said cam. At the lower end of the switch arm are contact members 10, which are adapted to'engage and disengage stationary contacts 11 forming terminals for the circuit. The pivot 2 is mounted in a frame 12, which is carried by the base, which frame is provided at its lowerfend with a yoke 13 whose ends 14 constitute abutments which limit the throw of the switch arm in either direction. The push buttons are guided by the plate l5.

In the operation of this switch, with the parts in the position shown in Fig. 1, de pression of the push button 6 causes the actuating member 3 to move until the high point 5 of the cam 4 passes the ball 8,

e ters Patent.

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whereupon the spring 9 causes the ball 8 to ergert a pressure on the opposite side of the high point 5 so as to cause the switch arm to move clockwise so as to open the `switch. When the switch is in open position, the depression of the push button 6 causes the parts to operate in a similar manner to move the switch arm counter-clockwise and close the switch.

The switch operates with a quick or snap action in each direction. It is positive in 1ts action and is of a simple and durable construction and can be made of small depth.

As will be evident to those skilled in the art, my invention permits of various modilications without departing from the spirit thereof or the scope of the appended claims.

What claim is: A 1. In an electric switch, the combination an oscillating actuating member pivoted at its central portion, a peaked cam thereon symmetrically disposed relatively to said pivot an oscillating switch arm movable' about said pivot, said arm having an elongated chamber in line with said cam, a ball and a spring .within said chamber, said spring acting to force said ball against said cam.

2. In an electric switch, the combination ot' an oscillating actuating member pivoted at its central portion, a peaked cam thereon symmetrically .disposed relatively to. said pivot, an oscillating switch arm movable about said pivot, said arm having an elongated chamber in line with said cam, a ball -and a spring within said chamber, said spring acting` to force said ball against said cam, and push buttons for actuating said actuating member.

3. In an electric switch, the combination of an oscillating actuating member pivoted at its central portion, a peaked cam thereon symmetrically disposed relatively to said plvot, an oscillating switch arm movable about said pivot, said arm having an elongated chamber in line with said cam, a ball and a spring within said chamber, said Spring acting to force said ball against said cam, a frame in which said members are pivoted, said frame having stops limiting the movements of said arm.

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